52402266 has 144 divisors (see below), whose sum is σ = 144050400. Its totient is φ = 13680576.

The previous prime is 52402253. The next prime is 52402267. The reversal of 52402266 is 66220425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52402267) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 888145 + ... + 888203.

It is an arithmetic number, because the mean of its divisors is an integer number (1000350).

Almost surely, 2^52402266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52402266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72025200).

52402266 is an abundant number, since it is smaller than the sum of its proper divisors (91648134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52402266 is a wasteful number, since it uses less digits than its factorization.

52402266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 52402266 is about 7238.9409446410. The cubic root of 52402266 is about 374.2111202805.

The spelling of 52402266 in words is "fifty-two million, four hundred two thousand, two hundred sixty-six".